Blind, and proud of it.

A group of people appeared moving around in circles, bumping into one another.  They look lost.  A passerby looks at them as they continued their purposeless chaotic movement with their eyes closed.
"Open your eyes.  You may see where you are going".
"But it is dark out there", replies one of them.
"It is not dark.  It is day light.  The sun is out, and the sky is clear", said the passerby.
"What you say is not true.  A good man told us it is dark", said another of the lost ones.
"But it is not dark.  The truth will be obvious if you just open your eyes for a second.", naively said the passerby.
"No we won't.  A trusted man told us that he heard a trusted man say that he heard another trusted man say that it is dark out there.  It is a chain of good trusted men. How can the truth be anything different?", said the lost ones as they continued their blind chaotic dance close to the cliff.

Their sacred Book says:

 وَإِذَا قِيلَ لَهُمُ اتَّبِعُوا مَا أَنزَلَ اللّهُ قَالُواْ بَلْ نَتَّبِعُ مَا أَلْفَيْنَا عَلَيْهِ آبَاءنَا أَوَلَوْ كَانَ آبَاؤُهُمْ لاَ يَعْقِلُونَ شَيْئاً وَلاَ يَهْتَدُونَ" - البقرة 170 "

"When it is said to them: ‘Follow what God hath revealed:’ They say: ‘Nay! we shall follow the ways of our fathers.’ What! even though their fathers Were void of wisdom and guidance?".  2:170

 But who cares what the Book says.  All they care about is that " A trusted man said he heard a trusted man say that he heard a trusted man say ............."